If you have high blood pressure, talk to your doctor before taking L-theanine.ĭoes it matter what form of L-theanine I use? L-theanine can also interact with blood pressure medications. If you're taking a medication for anxiety or depression, talk to your doctor before taking L-theanine. L-theanine can increase the effects of sedatives. It's also important to know that L-theanine can interact with some medications. However, as with any supplement, it's important to talk to your doctor before taking L-theanine. L-theanine is a safe and effective way to reduce anxiety and promote relaxation. Most people will not experience any side effects when taking L-theanine, but it's important to be aware of the possible side effects. If you experience any side effects, stop taking L-theanine and see your doctor. L-theanine is a safe amino acid, but it can still have side effects when taken in doses of any size. Be sure to read the label to see how much L-theanine is in each cup.Ĭan small doses of L-theanine have side effects? The recommended dose of L-theanine from tea is 1-3 cups per day. L-theanine is also added to some brands of bottled iced tea. The amount of L-theanine in tea varies depending on the type of tea and how it's brewed. Black and green tea both contain L-theanine. The commonly recommended dose is 200-400 mg per day. You can find L-theanine supplements at most health food stores. The safest and most effective way to take L-theanine is in supplement form. L-theanine is available in supplements and tea. Sources for side effects and adverse reactions can be found here. The usual cause is from taking an excessive dose. It is uncommon to experience gastric upset or vomiting when taking L-theanine, but possible. This is extremely rare but is most likely caused by the changes the L-theanine has on how the brain deals with serotonin and GABA. While L-theanine is often used to alleviate anxiety, it can increase feelings of anxiety in some people. L-theanine can cause dizziness in some people, but this is usually due to taking too high a dose. If you experience this side effect, stop taking L-theanine and see your doctor. L-theanine may cause diarrhea in some people. Consider taking your supplement with food to alleviate this. L-theanine is most likely to cause nausea if taken on an empty stomach. L-theanine can cause headaches in some people, but the symptoms usually subside within a few days. If you experience any unwanted side effects, stop taking L-theanine and see your doctor. It is not a sedative but can create a sedative-like effect. The most common side effect of L-theanine is drowsiness. L-theanine also reduces levels of stress hormones like cortisol. ( 3) These are all neurotransmitters that play a role in mood and emotion. L-theanine works by increasing GABA, serotonin, and dopamine levels in the brain. L-theanine has a calming effect ( 2) and is often used as a natural remedy for anxiety. L-theanine is an amino acid commonly found in tea leaves.
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( 1) However, it's important to know what side effects to look for and how to handle them should they occur.
It's considered safe to consume and has few side effects. That includes fundamentals such as good nutrition, daily exercise, a daily mind-body practice, good sleep hygiene, social connectedness and spirituality.L-theanine is an amino acid found naturally in tea leaves. It needs to be coupled with lifestyle choices that create a solid foundation for good health. Your provider can help you decide if melatonin is right for you and, if so, which one is a good choice for your situation.Īnd keep in mind that, as with any supplement, melatonin shouldn't be the first or only remedy you use to try to resolve a health concern such as insomnia. Melatonin supplements you can buy without a prescription vary widely in the amount of melatonin they contain.
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